Why did China land the Chang’e-4 rover on the moon? What was it supposed to accomplish or explore?
The mission objectives are:
The main scientific objective of CE-4 is to provide scientific data for lunar far side research, including: 1) general spatial environmental study of lunar far side；2) general research on the surface, shallow layer and deep layer of lunar far side；3) detection of low frequency radio on lunar far side using Low Frequency Radio Detector, which would be the first time of using such frequency band in lunar exploration history.
Title: Scientific Objectives of China Chang E 4 CE-4 Lunar Far-side Exploration Mission
Authors: Zhang, Hongbo; Zeng, Xingguo; Chen, Wangli
Why did China land a rover on the moon? (Chang'e-3)
To get to the other side! (Chang'e 4)
Hover cursor above to reveal answer.
(Hint: analogous to Why did the chicken cross the road?)
But seriously folks, here is a one hour English CGTN broadcast of the mission, going into great detail on the justification and goals.